def ffprobe(stream: IO[bytes], cmd='ffprobe', **kwargs):
"""Run ffprobe on an input stream and return a JSON representation of the output.
Code adopted from ffmpeg-python by Karl Kroening (Apache License 2.0).
Copyright 2017 Karl Kroening
Raises:
:class:`ffmpeg.Error`: if ffprobe returns a non-zero exit code,
an :class:`Error` is returned with a generic error message.
The stderr output can be retrieved by accessing the
``stderr`` property of the exception.
"""
args = [cmd, '-show_format', '-show_streams', '-of', 'json']
args += convert_kwargs_to_cmd_line_args(kwargs)
args += ["-"]
p = subprocess.Popen(args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
assert p.stdin
copyfileobj(p.stdin, stream)
out, err = p.communicate()
if p.returncode != 0:
raise ffmpeg.Error('ffprobe', out, err)
return json.loads(out.decode('utf-8'))
async def probe(filename, cmd='ffprobe', **kwargs):
# https://gist.github.com/fedej/7f848d20205efbff4db4a0fc78eae7ba
args = [cmd, '-show_format', '-show_streams', '-of', 'json']
args += convert_kwargs_to_cmd_line_args(kwargs)
args += [filename]
p = await create_subprocess_exec(*args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
coroutine = p.communicate()
out, err = await coroutine
if p.returncode != 0:
raise Error('ffprobe', out, err)
return json.loads(out.decode('utf-8'))
